Apple MD770LL/A, MC561LL/A, MD772LL/A manual Analog Audio Specifications, Optical digital audio in

Optical digital audio in

Based on a typical situation with playback of a 1 kHz, 0 dBFS 24-bit sine wave, unless otherwise specified below.

ÂÂ Input sample rate: 44.1 kHz, 48 kHz, or 96 kHz

ÂÂ Signal-to-noise ratio: Greater than 130 dB

ÂÂ Total harmonic distortion + noise: Less than -130 dB (0.00003 percent)

Analog Audio Specifications

ÂÂ Sample rate: 44.1 kHz, 48 kHz, or 96 kHz

ÂÂ Jack type: 1/8” mini

ÂÂ Bits per sample: 16-bit, 20-bit, or 24-bit

ÂÂ Frequency response: 20 Hz to 20 kHz, +0.5 dB/-3 dB

Analog audio out using the headphone jack (typical values)

Based on a typical situation with playback of a 1 kHz, -3 dBFS 24-bit sine wave, 44.1 kHz output sample rate into 150 ohms, unless otherwise specified below.

ÂÂ Output voltage: 1.3 volts (root mean square) (Vrms) (+4.5 dBu)

ÂÂ Output impedance: 55 ohms

ÂÂ Output power: 53 milliwatts (mW) into 32 ohms

ÂÂ Signal-to-noise ratio: Greater than 90 dB

ÂÂ Total harmonic distortion + noise: Less than -70 dB (.03 percent)

ÂÂ Channel separation: Greater than 50 dB

110Chapter 5   What’s Under the Hood